Electric resistance heating devices – Heating devices – Continuous flow type fluid heater
Patent
1993-08-12
1994-12-06
Walberg, Teresa J.
Electric resistance heating devices
Heating devices
Continuous flow type fluid heater
392489, 392503, F24H 110
Patent
active
053718305
ABSTRACT:
An infrared electric liquid heater includes an elongated emitter unit contained within an outer containment tube to define an annular volume through which the to-be-heated water flows. The emitter unit includes a tubular silica-composition envelope that comes into direct contact with the water to be heated. A tungsten filament is contained within the envelope and is supported along the longitudinal axis by spaced-apart filament supports. The envelope is fabricated from a silica composition discovered to provide unique structural properties; the envelope drawn from a melt (by volume) of 99.88% to 99.94% pure silica (SiO.sub.2), 0.04% to 0.08% crystalline sodium borax (Na.sub.2 B.sub.4 O.sub.7.10H.sub.2), and 0.2% to 0.04% hydroxide of potassium (KOH). This composition has demonstrated a structural strength that allows for a high efficiency in-line, instant-on heater using only a single silica wall separating the electrically energized filament from the liquid being heated. The interior of the envelope is filled with an argon/krypton/hydrogen bromide gas mixture that re-deposits any metallic vapor arising from the filament back onto the surface of the filament to avoid undesired deposition of the material of the filament onto the inner surface of the envelope. The tungsten filament emits strongly between 1.mu. and 1.2.mu. in the near-infrared band. The containment tube is provided with a gold-deposited reflective surface to enhance the overall efficiency of the heater.
REFERENCES:
patent: 2894166 (1959-07-01), Mohn
patent: 2934444 (1960-04-01), Smith
patent: 3274006 (1966-09-01), McKinnis
patent: 3459565 (1969-08-01), Jones
patent: 3546431 (1970-12-01), Gibbs
patent: 3906188 (1975-09-01), Gamell
patent: 4534282 (1985-08-01), Marinoza
patent: 4800252 (1989-01-01), Steixner
patent: 5054107 (1991-10-01), Batchelder
patent: 5054108 (1991-10-01), Gustin et al.
Neo International Industries
Walberg Teresa J.
LandOfFree
High-efficiency infrared electric liquid-heater does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-efficiency infrared electric liquid-heater, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-efficiency infrared electric liquid-heater will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-220942